Statistical Methods for Psychology

(Michael S) #1

CHAPTER 7 Hypothesis Tests Applied to Means


CHAPTER 7 Hypothesis Tests Applied to Means


Objectives
To introduce the t test as a procedure for testing hypotheses with
measurement data, and to show how it can be used with several different
designs. To describe ways of estimating the magnitude of any differences that
do appear.

Contents
7.1 Sampling Distribution of the Mean
7.2 Testing Hypotheses About Means —sKnown
7.3 Testing a Sample Mean When sIs Unknown—The One-Sample tTest
7.4 Hypothesis Tests Applied to Means—Two Matched Samples
7.5 Hypothesis Tests Applied to Means—Two Independent Samples
7.6 A Second Worked Example
7.7 Heterogeneity of Variance: The Behrens–Fisher Problem
7.8 Hypothesis Testing Revisited

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